From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcelo Tosatti Subject: Re: [RFC PATCH] KVM: Only print vcpu_unimpl when DEBUG is set Date: Wed, 1 Aug 2012 00:19:30 -0300 Message-ID: <20120801031930.GB31711@amt.cnet> References: <20120726122248.GA252@x4> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Avi Kivity , Gleb Natapov , Joerg Roedel , Jan Kiszka To: Markus Trippelsdorf Return-path: Content-Disposition: inline In-Reply-To: <20120726122248.GA252@x4> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On Thu, Jul 26, 2012 at 02:22:48PM +0200, Markus Trippelsdorf wrote: > Every time I start qemu-kvm on my system the following line is added to > the syslog: > > vcpu0 unhandled rdmsr: 0xc0010001 > > AFAICS all calls to vcpu_unimpl only contain debugging info with little > or no value for the end user. > > Wouldn't something like the following patch make sense? > > Signed-off-by: Markus Trippelsdorf It could be useful for debugging (but then lots of other things could). Anyone has a use for this? > diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h > index b70b48b..6bd816f 100644 > --- a/include/linux/kvm_host.h > +++ b/include/linux/kvm_host.h > @@ -321,7 +321,7 @@ struct kvm { > #define kvm_debug(fmt, ...) \ > pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) > #define kvm_pr_unimpl(fmt, ...) \ > - pr_err_ratelimited("kvm [%i]: " fmt, \ > + pr_debug_ratelimited("kvm [%i]: " fmt, \ > task_tgid_nr(current), ## __VA_ARGS__) > > /* The guest did something we don't support. */ > > -- > Markus > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html